<nav id ="navbar" th:fragment="navbar" class="navbar navbar-default ">
    <div class="pb-container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
							<span class="sr-only">
								导航
							</span>
                <span class="icon-bar">
							</span>
                <span class="icon-bar">
							</span>
                <span class="icon-bar">
							</span>
            </button>
            <a class="logo-a" th:href="@{/}">
                <img src="https://s1.ax1x.com/2022/07/12/j2tnVP.png" alt="logo" />
                <span><em>薪火</em>邮件</span>
            </a>
        </div>
        <div class="collapse navbar-collapse navbar-right" aria-expanded="false">
            <ul class="nav navbar-nav">
                <li th:class="${categoryId=='index' ? 'active' : ''} ">
                    <a th:href="@{/}">中文</a>
                </li>
                <li class="">
                    <a th:href="@{/}">English</a>
                </li>

                <li class="">
                    <a href="#">
                        关于薪火
                    </a>
                </li>

            </ul>
        </div>
    </div>
</nav>